Shirt-bosom stud



UNITED STATES PATENT OFFIOE.

JOHN P. DERBY, OF CAVENDISH, VERMONT.

SHIRT-BOSOM STUD.

Specification of Letters Patent No. 16,533, dated February 3, 1857.

To all whom it may concern:

Be it known that I, JOHN P. DERBY, of Cavendish, in the county of I/Vindsor and State of Vermont, have invented a new and Improved Method of Securing Studs to Shirt-Bosoms, of which the following is a full, clear, and exact description, reference being had to the annexed drawings, making part of this specification, in which- Figure l is an edge view. Fig. 2 a back view of a stud with my improvements attached. Figs. 3 and 4 enlarged views of the same.

My invention has for its object to prevent the disengagement of the stud from the shirt bosom and its consequent loss, and consists in providing it with a double lock of a peculiar construction which can only be opened for the disengagement of the stud by the pull of the hand while removing it from the bosom, and is at all other times closed or locked.

To enable others skilled in the art to understand my invention, I will proceed to describe the manner in which I have carried it out.

In the said drawings, a, is a flat strip which is united with the stud by the central connection c.

d, is a cross piece attached to the strip a, of the form represented in Figs. 3 and 4. The side pieces and e, are att-ached at one end to the strip a, and at the other they pass one beneath, and the other above the cross piece (Z. The operation of this fastening is as follows: IVhen it is to be inserted into the buttonhole in the shirt, it is pressed against the bosom, by which the side piece e, is depressed as seen in red in Fig. 3. This leaves the point z', free to be entered into the button hole, and the stud is then turned until the whole of the fastening is beneath the bosom. When the stud is to be removed from the shirt, it is pulled by the hand so as to press the shirt bosom against the side piece Z), and throw it into the position seen in blue in Fig. 3, the point n. is then free to enter the button hole, and by turning the stud in the opposite direction it is removed.

It is evident that a stud thus arranged, can never disengage itself from the shirt as the point n, requires to be first set free from the side piece b, and this can only be done by hand.

I do not claim the use of a single coil of wire with a single lock for the purpose of securing the stud to the bosom as that is well knowmbut IVhat I claim as my invention and desire to secure by Letters Patent, is-

The side pieces b, and e passing the one above, and the other beneath the crosspiece d, forming a double coil and double lock operating in the manner and for the purpose substantially as herein set forth.

JOHN P. DERBY. 

